Btrfs: Add efficient dirty accounting to the extent_map tree

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-11-27 11:16:35 -05:00
parent 448d640b66
commit ca6646264b
3 changed files with 36 additions and 4 deletions
--- a/fs/btrfs/extent_map.h
+++ b/fs/btrfs/extent_map.h
@@ -40,6 +40,7 @@ struct extent_map_tree {
 	struct rb_root map;
 	struct rb_root state;
 	struct address_space *mapping;
+	u64 dirty_bytes;
 	rwlock_t lock;
 	struct extent_map_ops *ops;
 	spinlock_t lru_lock;